mv   /etc/sysconfig/network-scripts/ifcfg-eth0  /etc/sysconfig/network-scripts/o.ifcfg-eth0.o
mv /etc/sysconfig/network-scripts/ifcfg-br-ex /etc/sysconfig/network-scripts/ifcfg-eth0
sed s/DEVICE=br-ex/DEVICE=eth0/ -i /etc/sysconfig/network-scripts/ifcfg-eth0
#sed -e 's/IPADDR=.*//' -e  's/NETMASK=.*//' -e 's/GATEWAY=.*//' -i  /etc/sysconfig/network-scripts/ifcfg-eth0
service network restart
